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All Journal METAMORFOSA Journal of Biological Sciences Journal of Marine and Aquatic Sciences Buletin Udayana Mengabdi Bumi Lestari Ecotrophic, Journal of Environmental Science JURNAL ENGGANO Jurnal Pengelolaan Perikanan Tropis (Journal Of Tropical Fisheries Management) Current Trends in Aquatic Science Advances in Tropical Biodiversity and Environmental Sciences
I Wayan Restu
Program Studi Manajemen Sumberdaya Perairan (Department Of Aquatic Resources Management) Universitas Udayana
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Veterinary Other

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Struktur Komunitas Fitoplankton di Area Keramba Jaring Apung Danau Buyan Kecamatan Sukasada, Buleleng, Propinsi Bali Putu Roni Graha Persada; I Wayan Restu; Alfi Hermawati Waskita Sari
Metamorfosa: Journal of Biological Sciences Vol 5 No 2 (2018)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2018.v05.i02.p03

Abstract

Danau Buyan merupakan sumberdaya alam akuatik yang mempunyai nilai yang sangat penting. Pemanfaatan danau buyan diantaranya adalah kegiatan budidaya keramba jaring apung yang berpotensi memberikan masukan nutrien kondisi ini dapat mempengaruhi kualitas air yang kemudian akan berpengaruh pada fitoplankton. Tujuan penelitian ini adalah untuk mengetahui struktur komunitas fitoplankton dan kualitas perairan di area keramba jaring apung Danau Buyan, Kecamatan Sukasada, Propinsi Bali. Penelitian ini dilaksanakan pada bulan Januari-Maret 2016 di area keramba jaring apung Danau Buyan, Kecamatan Sukasada, Kabupaten Buleleng, Propinsi Bali. Penelitian ini menggunakan metode sistematic sampling. Lokasi stasiun pengamatan total berjumlah 8 stasiun, stasiun 1-7 terletak dekat dengan area budidaya keramba jaring apung sedangkan 1 stasiun kontrol berada jauh dari area keramba jaring apung. Kegiatan pengambilan sampel dilakukan 3 kali dengan selang waktu 3 minggu. Hasil penelitian menunjukkan terdapat 9 genus fitoplankton yang terdiri dari 24 spesies. Hasil kelimpahan fitoplankton rata-rata yaitu 1454 sel/l sehingga masuk dalam kategori perairan oligotropik, Indeks keanekaragaman 07647-1,8352, Indeks keseragaman rata-rata-rata 3937. Nilai indeks dominansi 0,4225. Nilai parameter kualitas air yang didapatkan antara lain yaitu nilai suhu sebesar 23,54-24,94oC, Nilai Kecerahan yaitu 66,41-251.06, Nilai kekeruhan yaitu sebesar 2,10-6,39 NTU, Nilai pH yaitu sebesar 7,56-8,93, Nilai oksigen terlarut (DO) yaitu sebesar 4,10-5,44 mg/l, Nilai nitrat yaitu sebesar 0,39-0,99 mg/l dan nilai fosfat yaitu sebesar 0,13-0,45 mg/l. Secara keseluruhan hanya parameter oksigen terlarut (DO) yang kurang mendukung kehidupan fitoplankton.
STUDI HISTOPATOLOGI INSANG IKAN NILA (Oreochromis niloticus, Linn.) DITINJAU DARI KADAR AMMONIA (NH3) DI DANAU BATUR, BALI Desak Wira Triana Wandari; I Wayan Restu; Endang Wulandari Suryaningtyas
Metamorfosa: Journal of Biological Sciences Vol 5 No 1 (2018)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2018.v05.i01.p01

Abstract

Danau Batur merupakan danau terbesar di Pulau Bali yang berada di Kecamatan Kintamani, Kabupaten Bangli. Insang ikan Nila digunakan sebagai indikator karena merupakan organ yang sangat sensitif terhadap perubahan kualitas air. Penelitian bertujuan untuk mengetahui kondisi lingkungan perairan dan gambaran histopatologi insang Ikan Nila ditinjau dari kadar Ammonia (NH3) di Danau Batur. Penelitian dilaksanakan pada bulan Januari hingga Maret 2016 dengan metode yang digunakan adalah observasi langsung dan purposive sampling pada 5 Stasiun di Danau Batur. Analisis histopatologi dilakukan di laboratorium histopatologi, Balai Karantina Ikan dan pengendalian Mutu kelas 1 Denpasar, Bali. Sampel histopatologi insang dianalisa melalui proses isolasi, fiksasi, dehidrasi dan pembenaman pada paraffin dan pewarnaan dengan Haematoxylin-Eosin. Hasil kualitas air menujukkan nilai pH 8,71-9,08, nilai suhu 25,4-30,0°C, kadar DO 3,8-5,1 mg/L yang masih sesuai pada ambang baku mutu kelas III untuk kegiatan perikanan, sedangkan kadar NH3 0,027-0,105 mg/L berada di atas nilai ambang baku mutu air kelas III untuk kegiatan perikanan mengacu pada PP Nomor 81 Tahun 2001 tentang Pengolahan Kualitas Air dan Pencemaran Air. Hasil pengamatan histopatologi memperlihatkan adanya perubahan yang ditinjau dari kadar NH3. Perubahan yang terjadi pada insang berupa fusi, hiperplasia, apoptosis, telengiektasis dan haemoragii.
Status Tropik dan Struktur Komunitas Fitoplankton di Danau Beratan, Desa Candikuning, Kecamatan Baturiti, Kabupaten Tabanan, Provinsi Bali Yuli Ananda; I Wayan Restu; Rani Ekawaty
Metamorfosa: Journal of Biological Sciences Vol 6 No 1 (2019)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2019.v06.i01.p10

Abstract

Beratan Lake is located in Bedugul, Candikuning Village, Baturiti Subdistrict, Tabanan District, Bali Province. Beratan Lake is a caldera lake with a surface area of 438 hectares, 1,340 hectares of water catchment areas, a length of 2 km and 2 km wide and 49.22 million m3 of water volume. This research was conducted in January until February 2016. The aims of this study are to phytoplankton community structure.The composition of phytoplankton were found during this study dominated by the phylum of Chlorophyta and species were often found with high abundance is Staurastrum tetracerum. Average abundance in the waters of Lake Beratan is in the range 2054-2502 ind/l which shows that the waters of Lake Beratan with moderate fertility (mesotrophic). The value of species diversity (H ') has ranges from 2,34 - 2,55. The range uniformity index values has from 0.76 - 0.83. Value index of phytoplankton dominance has range of 0,1- 0,16 dominance relatively low indicated the absence of certain species dominance.
STUDI PENDAHULUAN KADAR TIMBAL DAN KADMIUM DALAM AIR DAN IKAN NILA (Oreochromis niloticus, Linn.) SEBAGAI KAJIAN KUALITAS AIR DI BENDUNGAN TELAGA TUNJUNG, BALI Made Octiya Arimardewi; I Wayan Restu; Suprabadevi Ayumayasari Saraswati
Metamorfosa: Journal of Biological Sciences Vol 5 No 1 (2018)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2018.v05.i01.p13

Abstract

Bendungan Telaga Tunjung terletak di Desa Timpag, Kecamatan Kerambitan, Kabupaten Tabanan, Provinsi Bali. Dalam perkembangannya, wilayah sekitar bendungan dimanfaatkan untuk kegiatan pertanian, industri serta pemukiman yang memungkinkan terdapatnya masukan bahan pencemar seperti logam berat. Berdasarkan hal tersebut, perlu dilakukan penelitian mengenai kualitas perairan ditinjau dari kandungan logam berat, mengingat fungsi bendungan yang dimanfaatkan untuk masyarakat. Penelitian ini bertujuan untuk mengidentifikasi konsentrasi kandungan logam berat Timbal (Pb) dan Kadmium (Cd) pada kolom air dan ikan nila (Oreochromis niloticus, Linn.) di Bendungan Telaga Tunjung, yang dilakukan pada bulan Februari 2016. Metode yang digunakan adalah metode purposive sampling, dengan teknik pengambilan sampel air dilakukan secara komposit pada 5 stasiun berdasarkan perwakilan perairan bendungan. Pengambilan sampel air dilakukan sebanyak 3 kali setiap 2 minggu, dan pengambilan sampel ikan dilakukan secara acak sebanyak 1 ekor setiap 2 minggu. Kandungan logam berat dianalisis menggunakan alat Plasma Atomic Emission Spectrometer ICPE-9000. Kosentrasi logam berat Timbal (Pb) di badan air yang diperoleh berkisar 0 – 0,009 mg/l, dan Kadmium (Cd) berkisar 0,135 – 0,310 mg/l. Pada ikan nila, konsentrasi timbal tidak dapat terdeteksi, dan konsentrasi kadmium yang di dapat berkisar 0,330 – 0,728 mg/kg. Hasil tersebut menunjukkan bahwa perairan di Bendungan Telaga Tunjung telah tercemar oleh logam berat Kadmium (Cd), karena telah melebihi ambang baku yang ditetapkan Peraturan Gubernur Bali Nomor 8 Tahun 2007 tentang Baku Mutu Lingkungan Hidup dan Kriteria Baku Kerusakan Lingkungan Hidup Kelas II yaitu sebesar 0,03 mg/l, dan melebihi ambang baku yang ditetapkan SNI (Standar Nasional Indonesia) 7387:2009 sebesar 0,1 mg/kg untuk ikan dan hasil olahannya.
Status Pencemaran Lingkungan Sungai Badung dan Sungai Mati di Provinsi Bali Berdasarkan Bioindikator Phylum Annelida Mawardi Labbaik; I Wayan Restu; Made Ayu Pratiwi
Journal of Marine and Aquatic Sciences Vol 4 No 2 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1216.157 KB) | DOI: 10.24843/jmas.2018.v4.i02.304-315

Abstract

Water pollution is the entry or inclusion of substances, energy and other components into the water by human activities, so that water quality decrease to a certain level. This study a timed to monitor the pollution of aquatic environment in the Badung River and Mati River by using Annelida phylum as bioindicator, the study was conducted from February to March 2017. The data obtained were analyzed by the structure of the community, and also used ABC (Abudance-Biomass Comparison) method. The result of the research showed that the most abundance of Annelida and dominant from all stations of Badung River and Mati River was Lumbriculus variegatus. Is showed that it contamination status was categorized as mild contamination because it was dominant by facultative organism. The structure of the Annelida community in the Badung River and Mati River with the value of the diversity index was categorized as low Annelida (H '<1.0). The uniformity index was categorized as depressed Annelida community (0.00 <E 0.50), high dominance index of Badung River (0.75 <C ? 1.00), Mati River was medium (0.50 < C < 0.75). The result of the water quality range as the supporting factor showed the average support for Annelida life i.e the current velocity 0.16 - 0.61 m/s, the temperature 25.5 - 31oC, DO 3-7.2 mg/l, pH 7.77 - 8.44 and BOD5 0.5 - 3.1 mg/l. The analysis environmental pollution condition of Badung River and Mati River with Annelida as bioindicator by using ABC method showed that were medium contaminated.
Inventarisasi Ikan Ekonomis Penting pada Musim Barat di PPI Kedonganan, Bali Mahfud Samdani; I Wayan Restu; Rani Ekawaty
Journal of Marine and Aquatic Sciences Vol 7 No 1 (2021)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2021.v07.i01.p02

Abstract

The study of economically important fish which is landed at Fishing Landing Base (PPI) Kedonganan District Kuta Selatan Badung Regency was held on 1 Februri s.d 31 March 2017 (west season). Objective is to inventory list of types of fish economically important which is landed in PPI Kedonganan Badung regency. The research was conducted using direct survey method with purposive sampling technique of fish landed PPI Kedonganan, the data were analyzed using descriptive analysis. The identification process was carried out by using identification keys from Saanin (1984) volumes I and II, and an important economic fish identification book from Peristiwady (2006). Based on the results of the study, there were 16 important types of important fish landed in PPI Kedonganan in the west season, which entered in the classification of 4 orders (perciformes, apodes, clupeiformes, and beloniformes), and 9 families consisting of 16 Species. Of the 4 orders, the most frequencies and volumes found were the perciformes with the tuna fish species, the sardines (Sardinella fimbriate), and the kawa-kawa (Euthynnus afinis). The least-discovered species are baronang (Siganus guttatus), flying fish (Cheilopogon sp) in the order of beloniformes, and kembung fish (Restrelliger sp). Comparison of production data in the west season with fish landing production data in PPI Kedonganan in other seasons, that types of fish are found relatively few species and the volume is lower. This means that the west season gives effect to the catch of fish that was declared in PPI Kedonganan.
Potensi Sumberdaya Lamun Untuk Mendukung Pengembangan Wisata Di Pantai Mengiat Nusa Dua, Bali Ida Ayu Novera Wandiani; I Wayan Restu; Made Ayu Pratiwi
Journal of Marine and Aquatic Sciences Vol 6 No 1 (2020)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2020.v06.i01.p10

Abstract

Seagrasses have functions and roles as primary producers, biota habitats, bottom seawater stabilizers, sediment catchers, and nutrient recyclers. With the function of seagrass as a habitat of biota, it can provide economic opportunities to be utilized as a marine tourism, especially marine ecotourism. Marine ecotourism is a concept of sustainable use of coastal resources with environmental service system that prioritizes coastal natural resources as an object of service. This study aimed to identify the seagrass potency ecologically and socially and to formulate the seagrass management strategies to support tourism development in Nusa Dua. This study was conducted from January-March 2017 using observation and interview method. Observation method was used to define the condition of seagrass, fish species, and environmental parameters. Then Interview method was used to know social conditiion of Mengiat Beach and analyzed by SWOT to formulate the seagrass management strategies. The result showed, there were 6 species, i.e., Halophila ovalis, Cymodocea Halodule pinifolia rotundata, Syringodium isoetifolium, Thalassia hemprichii, and Thalassodendron ciliatum. The percentage of seagrass coverage at 5 stations tend to be low (5,639%-47,49%). Based on Tourism Suitability Indexes, Mengiat Beach in Nusa Dua is suitable (S2) for tourism activities with value 75,08%. The priority strategies are formulated from the SWOT matrix is applying under water garden in seagrass base on tourism planning.
Analisis Perubahan Luasan dan Kerapatan Tajuk Mangrove di Kecamatan Borong Kabupaten Manggarai Timur Mu'tasim Billah; I Wayan Arthana; I Wayan Restu; Abd. Rahman As-syakur
Journal of Marine and Aquatic Sciences Vol 6 No 1 (2020)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2020.v06.i01.p06

Abstract

The ecosystem of mangrove is one of unique and distinctive forms of forest ecosystem, has high economic and ecological value, but has highly vulnerable to damage if it’s unwise in management. The information about area of mangrove forest in East Manggarai District was too limited. Therefore it needs an analysis of area and density changes of mangrove headings in East Manggarai District. The objective of this research is analyzing area and density changes of mangrove headings in Borong Subdistrict of East Manggarai District. The techniques of this research past supervised classification, NDVI analysis and field observation. The data analysis are correlation and accuracy test. Based on the image analysis, the ecosystem area of mangrove in Borong Subdistrict of East Manggarai District from 2007 till 2017 decreased by 20,61 hectares from 90.99 to 70.38 hectares. Declining also occurred in density of mangrove headings level, where density level was reduces to medium or rare. Result of the accuracy test obtained overall accuracy value was 82%. The density of mangrove headings on rarely classification has NDVI value of less than 0.3272, the medium has 0.3272 to 0.413 and the dense has more than 0.413. Based on the correlation analysis the value of density and NDVI form a linear regression model y = 233.2x – 26.304, with a very strong correlation (r) is 0.93. The decreasing area and density of mangrove caused by human activity that are harmful the existence of mangrove forest.
Kualitas Air dan Struktur Komunitas Plankton di Perairan Pantai Lovina Kabupaten Buleleng Provinsi Bali Irene Yolanda Br Ginting; I Wayan Restu; Dewa Ayu Angga Pebriani
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (739.879 KB) | DOI: 10.24843/jmas.2019.v05.i01.p14

Abstract

Lovina Beach is one of the beaches visited by many foreign and domestic tourists. Lovina Beach has a tourism spot and a vast area of marine biota cultivation. Life of biota in the waters of Lovina Beach is affected by conditions of beach waters. The research purpose was to know the correlation between waters quality and plankton in Lovina Beach by using observation method. The research was done on February until March 2017. Species of fitoplankton species from all three stations was dominated by Lyngbya sp. with abundance of 78 ind/l. The average value of the phytoplankton diversity index found was 1.7706. The average value of phytoplankton uniformity index is 0.9882 while the value of phytoplankton dominance index is 0.1737. The average value of the zooplankton diversity index found is 1.7311. The average value of the zooplankton uniformity index is 0.8896 while the zooplankton dominance index value is 0.2125. The result of the measurement of water quality is temperature parameter in Lovina Beach ranged from 27.6 - 28.9 0C, brightness ranged between 4.7 - 6 m, salinity of 25.3 - 27 ppt, DO (Dissolved Oxygen) ranged between 4 - 4 , 7 Mg / L, the pH ranged from 8.5 to 8.6, the nitrate ranged from 0.0081-00087 Mg/L and the phosphate ranged from 0.016 to 0.027 Mg / L. So, it can be concluded that the waters of Lovina Beach has the highest abundance of plankton that is the type of zooplankton, the level of plankton community structure in Lovina Beach waters is moderate.ppt, DO (Dissolved Oxygen) 4 – 4,3 Mg/l, pH 8,5 – 8,6, nitrate 0,0081 – 0,0087 Mg/l and phosphate 0,016 – 0,027 Mg/L. The structure of plankton community in Lovina coastal according of phytoplankton abundance categorized in oligotropic, while according of zooplankton abundance categorized in moderate (mesotropic).
Struktur Komunitas Makrozoobenthos Sebagai Indikator Kualitas Perairan di Pantai Serangan Provinsi Bali Yulihatul Meisaroh; I Wayan Restu; Dewa Ayu Angga Pebriani
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (658.178 KB) | DOI: 10.24843/jmas.2019.v05.i01.p05

Abstract

Serangan Island is a small island located approximately 5 km in south of Denpasar City and has a maximum length of 2.9 km and a width of 1 km which is administratively as part of the Denpasar City, Bali Province. Serangan Island is widely used for aquaculture and fisheries activities, moreover Serangan is also used as tourism activities, transportation routes, the harbour of ships and residences which may have impact on the aquatic ecosystem balance. The purpose of this research is to know how the structure of macrozoobenthos community and the water quality condition in Serangan Island. The research was conducted on February to March 2017 by using descriptive quantitative method in 3 research stasions. The result showed that there are 23 species of macrozoobenthos that consists of 7 classes, namely Gastropods, Bivalve, Crustacea, Echinoidea, Asteroidea, Ophiuroidea, and Holothuroidea. The highest total of abundance was at station 1 about 46,8 ind/m2. The diversity index ranged from 0,66-2,14 and the equibility index ranged from 0,60-0,81, while the dominance index ranged from 0,17-0,63. Based on the criteria of the Shanon-Wiener diversity index (H'), the diversity index at station 1 and 2 indicates moderate diversity which has moderate species distribution and moderately polluted waters, whereas the value of the diversity index at station 3 indicates that the diversity in this stasion is low, showed by low abundance of species, low stability of the community and severe polluted condition.
Co-Authors Abd. Rahman As-syakur Abdul Razak Alfi Hermawati Waskita Sari Anesa Ronavia Arip Arip Arisanti Dyah Puspitasari Atsna Qi Doma T. Manihuruk Bagus Sudananjaya Bastiar Nurdin Cintya Kriss Jayanthi Desak Made Goldyna Rarasari Desak Putu Permathasari Desak Wira Triana Wandari Dewa Ayu Angga Pebriani Dewangga Ari Kusuma Putra Diah Ayu Safitri Dimas Hafidh Nugroho Dita Dwi Ayu Isukadana Endang Wulandari Suryaningtyas Evrina Cahyani Sinaga Fuad Hasin Ahmad Gagah Gumelar Wicaksono Gde Raka Angga Kartika Gede Bayu Sulastika Hanif Abdullah I Gede Suyoga I Gede Wahyu Surya Wirawan I Gusti Agung Bagus Putra Adiguna I Ketut Wija Negara I Ketut Wija Negara I Nyoman Sastra Adi Putra I Wayan Arthana I Wayan Darya Kartika I Wayan Gde Samping Gargitha I Wayan Rian Riki Saputra Ida Ayu Novera Wandiani Ilmy Amalia Indah Eka Yulianti Indah Nurtira Irene Yolanda Br Ginting Jordan Alexander Anggiat Simanjuntak Juliyah Emka Kadek Ira Maresa Ketut Tika Suariningsih Kindy Nurrani Annisa Komang Kerta Sanjaya Lingga Nurmalasari Made Ayu Pratiwi Made Ayu Pratiwi Made Octiya Arimardewi Mahfud Samdani Maria Angelina Vicario Tonga Mawardi Labbaik Mu'tasim Billah Muhammad Alfiansyah Mahmud Muhammad Rizky Asvin Muhammad Sulthon Subekhi Ni Kadek Dwi Widyanti Putri Ni Komang Ayu Sukawati Ni Luh Intan Kartika Sari Ni Made Ernawati, Ni Made Ni Putu Diah Kusumawati Ni Putu Putri Wijayanti Ni Putu Suci Mardani nyoman anisa Pande Adhitya Prabhuwinata Pande Gde Sasmita Julyantoro Pande Kadek Ari Iswari Putu Roni Graha Persada Rani Ekawaty Ribka Evanzelina Laia Sherina Oktafianti Siti Zubaidah Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati Wayan Putri Prakanti Karya Wenny Aberti Manurung Wisnu Kawirian Yessica Christin Yohana Christanti Ndale Yuli Ananda Yulihatul Meisaroh